Remove bootloader logic from mcu_selection.mk (#20150)

* Remove bootloader logic from mcu_selection.mk

* Move MCU/BOOTLOADER to info.json

keyboards/phage_studio/pila87/info.json

@@ -8,6 +8,8 @@
         "pid": "0x5887",
         "device_version": "0.0.1"
     },
+    "processor": "STM32F103",
+    "bootloader": "stm32duino",
     "matrix_pins": {
         "cols": ["B5", "B4", "B6", "C0", "C1", "C2", "C3", "B7", "B3", "D2", "C12", "C11", "C10", "A15", "C15", "C13", "A3"],
         "rows": ["A1", "A2", "A10", "A9", "A8", "C9"]

keyboards/phage_studio/pila87/rules.mk

@@ -1,15 +1,5 @@
-# MCU name
-MCU = STM32F103
-
-# Bootloader selection
-# Cannot use `BOOTLOADER = stm32duino` due to the need to override
-# `MCU_LDSCRIPT`, therefore all parameters need to be specified here manually.
-OPT_DEFS += -DBOOTLOADER_STM32DUINO
-MCU_LDSCRIPT = STM32F103xB_stm32duino_bootloader
-BOARD = STM32_F103_STM32DUINO
-BOOTLOADER_TYPE = stm32duino
-DFU_ARGS = -d 1EAF:0003 -a 2 -R
-DFU_SUFFIX_ARGS = -v 1EAF -p 0003
+# Configure for 128K flash
+MCU_LDSCRIPT = STM32F103xB
 
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